Synthesis p. 854 - 855 (1986)
Update date:2022-08-02
Topics:
Adam, Waldemar
Doerr, Markus
A new method was developed involving transfer of 4-phenyl-4H-1,2,4-triazole-3,5-dione (PTAD) from thermally labile urazoles 9 and 10 to bicyclic olefin derivatives 1-8, which irreversibly undergo cycloaddition accompanied by Wagner-Meerwein rearrangement.In most cases purer products and significantly improved yields of the corresponding urazoles 11-18 are obtained than by direct PTAD cycloaddition.
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(2004)Doi:10.1039/b600970k
(2006)Doi:10.1016/S0022-328X(03)00633-8
(2003)